short answer please

As professional communicators, public relations students and professionals must be conversant in all elements of communications. And in the 21st century, no communications elements are more important than the internet and social media. Gladly, both the internet and the World Wide Web have unquestionably arrived" as public relations tools and areas of knowledge. Social media have extended their reach and power into new areas of the practice that are still emerging. Thus, public relations departments have interactive specialists and groups responsible for communicating via social media. Identify and describe how public relations professionals use the primary social media vehicles of Facebook and Twitter to publicize their clients' activities